Max atjerbach



M. AUERBACH. SHUTTLE CHANGE MECHANISM FOR LOOMS.

APPLICATION FILED MAYIB, 1916.

l ,8?, 38%. Patented June 24, 1919.

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TINTTED STATE PATENT @TTTUE.

MAX AUERBAGH, 0F BREMEN, GERMANY, ASSIGNOR T0 HERMAN BLAUPOT TEN GATE,

OF WASSENAAR, NEAR THE HAGUE, NETHERLANDS.

SHUTTLE-CHANGE MECHANISM FOR LOOMS.

Specification of Letters Patent.

Patented June 2%, 1919.

Application filed May 18, 1916. Serial No. 98,434.

To all whom it may concern:

Be it known that I, MAX AUERBACH, a subject of the Russian Emperor, andresiding at Bremen, Germany, have invented certain new and usefulImprovements in Shuttle-Change Mechanism for Looms, of which thefollowing is a specification.

Shuttle change mechanisms for looms have been proposed wherein the emptyshuttle is thrown out by a spring loaded swivel trap or Wall of theshuttle box on the withdrawin of a catch or the like which holds thesaid trap or wall in its closed position. In such shuttle changemechanisms the withdrawing of the catch is generally effectedmechanically or electrically by a contact or a feeler lever which isoperated on the shuttle, which is to be replaced, being wound ofi. Owingto this construction the shuttl box trap is released, and con sequentlythe shuttle replaced, only after the shuttle has been exhausted. Now itis important that the shuttle be also automatically replaced on thebreakage of the weft, as only in this manner the absolutely auto maticworking of the loom is insured on the shuttle being exhausted as well ason breakage of the weft, without any manual assistance being required.

To meet these requirements the present invention provides means forcontrolling the release of the shuttle box trap by the weft controllingmember. As is well known, a weft controlling member is actuated as soonas the weft looses its tension, 2'. e. as soon as it breaks or is woundoff; if therefore the shuttle box trap is controlled by the weftcontrolling member it is clear that the shuttle is replaced as well whenit is exhausted as on the breakage of a weft.

The drawing herewith shows one embodiment of the invention.

Figure 1 is a plan view of my improved shuttle change mechanism.

Fig. 2 is an end elevation of the same partly in section.

In this embodiment the trap referred to above is constituted by apivoted shuttle box rear wall on the lines as indicated by the Germanspecification No. 275,568.

According to the present invention the spring loaded shuttle box rearwall 5, which is kept in its closed position by a catch 9 or the like,is to be released by the weft controlling member not only when theshuttle is exhausted, but also on the breakage of the weft. 1

For this purpose the catch 9 is fixed on a shaft 2 which is rotatablymounted in front of the lathe 1, in such a manner, that a ro tation ofthe shaft 2 causes the catch 9 to descend and the shuttle box rear wallto be released. In order that the shaft2 may be rotated on the breakageof the weft or on the shuttle being reeled off, the weft controllingmember 3 which, being pivoted at 4:, is lifted by the tight weft onevery stroke of the lathe in a manner well known, is fixed to a link 6,which in turn is connected to a lever 8 pivoted upon a pin or stud 7. Tothe lever 8 is fixed a rod 10 provided at its end with a catch or hook11. The catch 11 on the rod 10 is freely located behind the nose 13 onthe shaft 2. If however the lever 8 is rotated about the pin or stud 7in the direction of the arrow, this rotation being initiated by the weftcontrolling fork on the breakage of the weft in the manneras fullydescribed above, the catch 11 engages the nose 13 thus imparting arotation to the shaft 2, by which the catch 9 on the shaft 2 is given adownward movement, thus releasing the swiveling shuttle box trap. Aslong as the weft is tight and so engages the controlling member (fork) 3on the forward stroke of the lathe, the said fork is tilted and thesystem 6, 8, 10, 11 and 13 remains in its relative position, so that theshaft 2 is not rotated. As soon, however, as the weft breaks or is woundoff, and consequently looses its tension, the fork 3 is no longer tiltedon the forward stroke of the lathe, so that its hook 14 (Fig. 2) engagesa lug 15 of the toothed segment 19 which receives an oscillatory motionthrough the cam gear 16, 17, 18. This causes thefork 3 to be drawnbackward by the toothed seg ment 19 in the direction of the arrow 20, sothat the rod 6 forces the lever 8 in the direction of the arrow 12 andthe hook 11 engages the hook 13, rotary movement being therebytransmitted to the shaft 2, which turns the catch 9 and releases theshuttle box rear wall.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is:

1. In a loom, the combination of a shuttle box having a pivotallymounted rear Wall,

a member tending to impart a swiveling motion to said rear Wall, a pawlfor holding said rear Wall in position substantially parallel with theshuttle-box front wall against the action of said member, a Weft-forkadapted to be actuated on the failure of a Weft across the grid, abreast-beam, a lever connected with the Weft-fork and pivotally mountedon said breast-beam, and mech: anism including a catch for transmittingthe motion of said lever to said pawl.

2. In a 100111, the combination of a shuttlex avi g piv ta y moun edrear Wa l, a spring tending to impart a swiveling motion to said rearall, a pawl forholding said rear Wall in a position substantiallyparallel to the shuttle-box front all against the action of said spring,a Weftfork adapted to be actuated on the failure of a Weft across thegrid, a breast-beam, a lever connected with the Weft-fork and pivotallymounted on said breast-beam, a rod connected With said lever, aprojection on said rod, a shaft mounted alon the lay-beam and connectedWith said paw and aprojection .on said shaft adapted to coact With thesaid projection on the said rod. In testimony whereof I have aflixedhereunto ny signature in presence of tWo Witnesses.

- MAX AUERBAOH. Witnesses.

D. FLUMBURCLI, CARL FRANCKE, Sr.

op e f this pa nt ay be m i ed iQ five cent ach, by dd sing theommission of P e Was in 1- 9-

